Electronic clock



FIG. 1 is a top, left, and front perspective view of the electronic clock showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a front elevational view thereof. 

The ornamental design for an electronic clock, substantially as shown. 